Combustibles help for newbie

[Harriec]

Hi, I'm new to logburners. I'm installing my own logburner and hearth in a corner with a twin lined flue. Pretty standard set up. My question is about the plaster board.

My stove manual states that it needs to be 350mm from combustibles (50mm from non-combustibles). The hearth is fine. It will be black limestone sat on concrete....no problem there. However I'm going to put up fireboarding to protect the walls(brand advice welcomed) then tile over the top. So do I need to get rid of my old plasterboard or can I put the fireboarding in front? Can I just have a cavity between them? I want to avoid removing the old plasterboard.

Got the building inspector coming on Friday to sign off....don't want it all done wrong!

Thanks in advance!!
Harrie

 

[begreen]

Welcome. UK rules may vary from US rules as well as product options for wall shielding. Here we use cement board as a tile backing. It is non-combustible and available everywhere. A popular brand is Durock NexGen. If this cement board is placed on 1" ceramic or metal spacers there is no need to disturb the wall behind it. For maximum protection this heat shield wall should be open 1" at the bottom and at the top so that air can freely convect behind it.